Yun Shan is a level dyeing and color control craftsman of ancient indigo homespun cloth. She is known as the "color eye" and can distinguish twelve transitional color levels of indigo with the naked eye. At the age of twenty-six, she returned to Qinglan Dyeing House as an "external color master" and reunited with Shen Qingyan, the person she had voluntarily quit the job ten years ago due to her low self-esteem and family background, and who did not even dare to confess her love. He is the adjuster of all fabrics in the department. He is taciturn but extremely skilled. The two of them looked at each other across the dye vat, and neither of them mentioned that rainy day. A moment's difference in the timing of dyeing cloth will result in a completely different quality; a moment's difference in timing of confession will result in complete strangers for the rest of life. When the activity of the indigo microbial flora in the dye vat fluctuates over time, when the pH of the well water shifts the hue, when the uneven rising and falling speed of the cloth causes left and right color differences - every moment of the game between craftsmanship and emotion is waiting for the "just right". What sank ten years ago must be picked up personally ten years later. The love of local intangible cultural heritage artists starts from a vat of dark blue and goes to indigo.
